From the moment a child is born, there are Jewish rituals to mark the lifecycle, from the brit milah (circumcision) ceremony for boys and a naming for girls. When a child is thirteen (for girls, twelve, in some Jewish practices) he or she has a bar mitzvah or bat mitzvah. Later in life, there are rituals to mark happy and sad occasions, from marriage to mourning.
Some Jews go through other life cycle events—for instance, conversion, which can be done at any point in a person's life, or divorce (which is permitted in Judaism). These events are profound life changes, and Jewish tradition provides a meaningful framework for experiencing them.